Commit Graph

91 Commits

Author SHA1 Message Date
nekral-guest
907025eb40 * src/su.c: environ is provided by <unistd.h>.
* src/su.c: Added function prototypes.
	* src/su.c: Rename shellstr parameter to shellname to avoid
	collision with static variable.
	* NEWS, src/su.c: Added support for PAM modules which change
	PAM_USER.
2011-06-16 21:21:29 +00:00
nekral-guest
66d71aafb7 Cleanup. 2011-06-13 18:27:51 +00:00
nekral-guest
317939e821 * src/su.c: After prepare_pam_close_session() there is no need to
close the session in the child. Added pam_setcred to
	prepare_pam_close_session().
2011-06-13 18:27:46 +00:00
nekral-guest
1340beed16 * src/su.c: Also drop the controlling terminal when PAM is not
used.
	* src/su.c: Remove run_shell().
2011-06-13 18:27:40 +00:00
nekral-guest
e9045e9f55 * src/su.c (prepare_pam_close_session): Extract the creation of a
child and listening for signal in the parent from run_shell().
	prepare_pam_close_session() is now executed before the creation of
	the pam session and before the UID is changed. This allows to
	close the session as root.
2011-06-13 18:27:34 +00:00
nekral-guest
69371ba2c2 * src/su.c: Extract export of environment from main(). 2011-06-13 18:27:28 +00:00
nekral-guest
dbe0b96404 * src/su.c: Extract command line processing from main(). 2011-06-13 18:27:23 +00:00
nekral-guest
43e65fdd46 * src/su.c: Close the password databases together with syslog. 2011-06-13 18:27:17 +00:00
nekral-guest
5d6f4f8ea4 * src/su.c: Merge environment setting blocks after the creation of
the session.
2011-06-13 18:27:12 +00:00
nekral-guest
b63c830547 * src/su.c: Cleanup check_perms_nopam(). 2011-06-13 18:27:06 +00:00
nekral-guest
927c2f06a3 * src/su.c: Split check_perms() in to a PAM (check_perms_pam) and
a non-PAM (check_perms_nopam) version.
2011-06-13 18:26:58 +00:00
nekral-guest
40a16a1b04 Compile fixes & cleanups. 2011-06-13 18:26:52 +00:00
nekral-guest
6be3ac560b * src/su.c (save_caller_context): Extract from main() the code
used to save the caller's context.
2011-06-13 18:26:47 +00:00
nekral-guest
b661b913b5 * src/su.c: Cleanup local variables. 2011-06-13 18:26:36 +00:00
nekral-guest
b273c4d19f Cleanup comments. 2011-06-13 18:26:31 +00:00
nekral-guest
7ebfb5c90f * lib/prototypes.h, src/suauth.c, src/su.c (check_su_auth): Do not
use the pwent global variable to communicate between APIs of
	different files. Added boolean parameter su_to_root to
	check_su_auth().
	* src/su.c (check_perms): Return the passwd entry of the finally
	authenticated user. Remove usage of the pwent variable.
	* src/su.c: The password of the caller is the one from the
	spwd structure only if the passwd's password is 'x'.
2011-06-13 18:26:26 +00:00
nekral-guest
3abd71c526 * src/su.c: Extract the authentication from the main function. 2011-06-13 18:26:16 +00:00
nekral-guest
dc90c77285 * src/su.c: Define shellstr before the environment so that
restricted_shell is called only once. This will allow moving the
	environment definition after the switch to the new user.
2011-06-13 18:26:10 +00:00
nekral-guest
2f71935616 * src/su.c: Move definition of change_environment and shellstr
after the switch to the final subsystem. The previous architecture
	forced to always change the environment (the shell starts with a
	'*' and was thus restricted, and change_environment could not be
	reset to false).
2011-06-13 18:25:57 +00:00
nekral-guest
941e94f1d2 * src/su.c: No need to change the user's shell in case of
subsystem root. Update the comments.
2011-06-13 18:25:51 +00:00
nekral-guest
4be8077a56 * src/su.c: Group some of the environment processing blocks. The
definition of shellstr, PATH and IFS is not influenced (getenv,
	getdef, restricted_shell) by and does not influence (addenv does
	not change environ) the authentication. And the authentication
	does not overwrite those definitions. This will ease an extraction
	from the big main() function.
2011-06-13 18:25:45 +00:00
nekral-guest
aef33a89c2 * src/su.c: No need to call expire() if there are no shadow entry.
No need to convert a passwd entry into an spwd entry in that case.
2011-06-13 18:25:40 +00:00
nekral-guest
1ddde00b1d * src/su.c: Updating pwent after expire() is not useful. Only the
password information may have changed and they are not used
	anymore afterwards.
2011-06-13 18:25:34 +00:00
nekral-guest
b5403415f7 * NEWS, src/su.c: Do not forward the controlling terminal to
commands executed with -c. This prevents tty hijacking which could
	lead to execution with the caller's privileges. This required to
	forward signals from the terminal (SIGINT, SIGQUIT, SIGTSTP) to
	the executed command.
2011-06-05 14:41:15 +00:00
nekral-guest
991ce97170 * src/su.c: Fix handling of environment variables when
the environment is not changed. In particular, this makes su
	behave as documented regarding PATH and IFS (i.e. they are reset)
	when -p is provided.
2010-08-28 19:55:31 +00:00
nekral-guest
ab9427420e * src/newgrp.c, src/userdel.c, src/grpck.c, src/gpasswd.c,
src/newusers.c, src/pwconv.c, src/chpasswd.c, src/logoutd.c,
	src/chfn.c, src/groupmems.c, src/usermod.c, src/pwunconv.c,
	src/expiry.c, src/groupdel.c, src/chgpasswd.c, src/useradd.c,
	src/su.c, src/groupmod.c, src/passwd.c, src/pwck.c, src/chage.c,
	src/groupadd.c, src/login.c, src/grpconv.c, src/groups.c,
	src/grpunconv.c, src/chsh.c: Prog changed to a constant string.
2010-08-22 19:36:09 +00:00
nekral-guest
07e462f01f * libmisc/limits.c: Avoid implicit conversion of integer to
boolean.
	* libmisc/basename.c: Avoid implicit conversion of pointer to
	boolean.
	* libmisc/basename.c, lib/prototypes.h (Basename): Return a
	constant string.
	* libmisc/basename.c, libmisc/obscure.c, lib/prototypes.h,
	libmisc/xmalloc.c, libmisc/getdate.h, libmisc/system.c,
	libmisc/getgr_nam_gid.c, libmisc/failure.c, libmisc/valid.c: Add
	splint annotations.
	* libmisc/chowndir.c: Avoid memory leak.
	* libmisc/chowndir.c: Do not check *printf/*puts return value.
	* libmisc/chowntty.c: Avoid implicit conversion between integer
	types.
	* libmisc/obscure.c: Return a bool when possible instead of int.
	* libmisc/shell.c: Do not check *printf/*puts return value.
	* libmisc/shell.c: Do not check execle return value.
	* libmisc/setupenv.c: Avoid implicit conversion between integer
	types.
	* libmisc/xmalloc.c: size should not be zero to avoid returning
	NULL pointers.
	* libmisc/hushed.c: Do not check *printf/*puts return value.
	* libmisc/system.c: Avoid implicit conversion of integer to
	boolean. safe_system last argument is a boolean.
	* libmisc/system.c: Check return value of dup2.
	* libmisc/system.c: Do not check *printf/*puts return value.
	* libmisc/system.c: Do not check execve return value. 
	* libmisc/salt.c: Do not check *printf/*puts return value.
	* libmisc/loginprompt.c: Do not check gethostname return value.
	* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Do not check
	gr_rewind/pw_rewind return value.
	* libmisc/ttytype.c: Limit the number of parsed characters in the
	sscanf format.
	* libmisc/ttytype.c: Test if a type was really read.
	* libmisc/sub.c: Do not check *printf/*puts return value.
	* libmisc/sub.c: Avoid implicit conversion of integer to boolean.
	* src/userdel.c: Fix typo in comment.
	* src/userdel.c: Avoid implicit conversion of boolean to integer.
	* src/userdel.c: safe_system last argument is a boolean.
	* src/newusers.c: Avoid implicit conversion of boolean to integer.
	* src/newusers.c: Avoid implicit conversion of integer to boolean.
	* src/usermod.c: Add brackets.
	* src/usermod.c: Avoid implicit conversion of characters or
	integers to booleans.
	* src/vipw.c: Avoid implicit conversion of integer to boolean.
	* src/su.c: Avoid implicit conversion of integer to boolean.
	* src/su.c: Add brackets.
	* src/useradd.c: Avoid implicit conversion of characters or
	integers to booleans.
2010-08-22 19:13:53 +00:00
nekral-guest
7eb6a4b3a4 Updated copyrights. 2010-08-22 13:04:54 +00:00
nekral-guest
471a2df3a6 * libmisc/obscure.c, lib/prototypes.h (obscure): Return a bool
instead of an int.
	* libmisc/obscure.c, libmisc/tz.c, src/passwd.c, lib/encrypt.c,
	libmisc/copydir.c, lib/prototypes.h: Add splint annotations.
	* libmisc/tz.c: Fix some const issues.
	* libmisc/tz.c: Avoid multi-statements lines.
	* libmisc/tz.c: Add brackets.
	* libmisc/copydir.c: Do not check *printf/*puts return value.
	* libmisc/copydir.c: Fail if we cannot set or reset the SELinux
	fscreate context.
	* libmisc/copydir.c: Use xmalloc instead of malloc.
	* libmisc/copydir.c: Do not check lutimes return value
	* src/vipw.c: Avoid implicit conversion of integer to boolean.
	* src/su.c (iswheel): Return a bool instead of an int.
	* src/passwd.c: Remove insert_crypt_passwd(). Use xstrdup instead.
	* src/passwd.c: Return constant strings when sufficient.
	* src/passwd.c: Do not check *printf/*puts return value.
	* src/passwd.c: Avoid implicit conversion of character to boolean.
	* src/passwd.c: Do not check sleep return value.
	* src/sulogin.c: Do not check *printf/*puts return value.
	* lib/encrypt.c: Do not check fprintf return value.
2010-08-22 12:49:07 +00:00
nekral-guest
427b60f288 * src/su.c: shell's name must be -su when a su fakes a login. 2010-03-30 21:32:36 +00:00
nekral-guest
fcd5b38caf * src/su.c, src/vipw.c, src/newgrp.c: When the child is
interrupted, stop ourself with a SIGSTOP signal.
2010-03-23 13:05:06 +00:00
nekral-guest
291b28ac52 * src/su.c: Do not sanitize the environment. This breaks
--preserve-environment. This sanitation was disabled on Debian
	since quite some time with no reported issues, and sanitize_env()
	documentation agrees that it should be useless as all modern
	Unixes will handle setuid executables properly. This Fixes
	Alioth#312287.
2010-01-24 17:13:40 +00:00
nekral-guest
248d5fd870 2009-11-01 Michel Hermier <michel.hermier@gmail.com>
* src/su.c: Set the default ENV_SUPATH to
	/sbin:/bin:/usr/sbin:/usr/bin (i.e. PATH when no ENV_SUPATH is
	specified).
2009-11-01 16:57:59 +00:00
nekral-guest
2be243c143 pid_child and kill_child are only used when USE_PAM. 2009-09-08 21:33:14 +00:00
nekral-guest
a845c67c60 * src/su.c: Fix indentation.
* src/su.c: Add more messages for translation.
	* src/su.c: Ignore kill() return value when sending the TERM
	signal. If it fails, a KILL should be sent anyway.
2009-09-08 20:46:43 +00:00
nekral-guest
756700ddf3 * NEWS, src/su.c: When su receives a signal, wait for the child to
terminate (after sending a SIGTERM), and kill it only if it did
	not terminate by itself. No delay will be enforced if the child
	cooperates. See http://bugs.gentoo.org/282094
	* NEWS, man/su.1.xml: Document su's exit values.
2009-09-08 20:39:15 +00:00
nekral-guest
8806b07bd2 * src/userdel.c, src/lastlog.c, src/gpasswd.c, src/newusers.c,
src/chpasswd.c, src/groupmems.c, src/usermod.c, src/chgpasswd.c,
	src/vipw.c, src/su.c, src/useradd.c, src/groupmod.c, src/passwd.c,
	src/groupadd.c, src/chage.c, src/faillog.c, src/chsh.c: Use
	booleans for tests.
	* src/userdel.c, src/gpasswd.c, src/groupmems.c, src/usermod.c,
	src/groupmod.c, src/passwd.c: Use a break even after usage().
2009-09-05 22:31:29 +00:00
nekral-guest
91b60a955c * NEWS, src/userdel.c, src/lastlog.c, src/gpasswd.c,
src/newusers.c, src/chpasswd.c, src/groupmems.c, src/usermod.c,
	src/chgpasswd.c, src/vipw.c, src/su.c, src/useradd.c,
	src/groupmod.c, src/passwd.c, src/groupadd.c, src/chage.c,
	src/faillog.c, src/chsh.c: If someone uses the -h/--help options,
	the usage should not go to stderr nor should the utility exit with
	non-zero status. All of the shadow utils do just this
	unfortunately, so convert them over to sanity.
	* man/groupmems.8.xml, man/gpasswd.1.xml: Added option -h/--help.
2009-09-04 23:02:33 +00:00
nekral-guest
24cfe44b07 * libmisc/shell.c, src/su.c: Execute the scripts with "sh -"
rather than "sh".
2009-07-22 13:35:57 +00:00
nekral-guest
db38a728d1 * configure.in, libmisc/shell.c, libmisc/setupenv.c, src/newgrp.c,
src/su.c: Let the system shell be configurable.
2009-07-22 13:30:06 +00:00
nekral-guest
4ad827768e * NEWS, src/su.c, libmisc/shell.c: Added support for shells being a
shell script without a shebang.
2009-07-20 14:00:50 +00:00
nekral-guest
7d5d9c1841 * src/su.c, man/su.1.xml: The default behavior (without -p or
--login) is to copy most of the environment variables. Revert a
	previous change and update the documentation.
2009-06-11 20:01:21 +00:00
nekral-guest
f4f6300499 * NEWS, src/su.c: Preserve the DISPLAY and XAUTHORITY environment
variables, even with --login. This was not the case before in the
	PAM version.
2009-06-05 22:19:38 +00:00
nekral-guest
37bda83dfc * src/su.c: Use a boolean instead of 0. 2009-05-21 11:58:59 +00:00
nekral-guest
f634cd3e2c * libmisc/console.c (console): Remove the leading /dev/ from the
tty before comparing with the lines specified by CONSOLE.
	* src/su.c: Do not remove the /dev/ prefix since it is done by
	console().
2009-05-16 18:19:24 +00:00
nekral-guest
74073db5db * src/su.c: Avoid redeclaration of root_pw. 2009-05-10 18:20:41 +00:00
nekral-guest
4e75bb57bb * src/newgrp.c, src/chfn.c, src/groupmems.c, src/usermod.c,
src/userdel.c, src/chpasswd.c, src/grpck.c, src/gpasswd.c,
	src/groupdel.c, src/chgpasswd.c, src/vipw.c, src/useradd.c,
	src/su.c, src/groupmod.c, src/passwd.c, src/pwck.c,
	src/groupadd.c, src/chage.c, src/login.c, src/faillog.c,
	src/sulogin.c, src/chsh.c, src/pwconv.c: Added splint annotations.
	* src/userdel.c, src/pwconv.c, src/lastlog.c, src/grpck.c,
	src/vipw.c, src/groupmod.c, src/passwd.c, src/pwck.c, src/login.c,
	src/sulogin.c, src/usermod.c: Use return instead of exit at the
	end of main().
	* src/gpasswd.c, src/passwd.c, src/faillog.c: Use the exitcodes.h
	exit codes.
	* src/chpasswd.c: Added missing ||.
	* src/nologin.c: Do not include exitcodes.h.
	* src/nologin.c: Added brackets.
	* src/nologin.c: Avoid assignments in comparisons.
2009-04-30 21:39:38 +00:00
nekral-guest
6b46161f2d * src/su.c: If there are no root account, or if the root account
has an UID != 0, default to the first UID 0 account.
2009-04-12 00:28:32 +00:00
nekral-guest
d8c9236a18 * NEWS, src/su.c: Preserve COLORTERM in addition to TERM when su
is called with the -l option.
2009-01-06 20:13:31 +00:00
nekral-guest
93358ac3de * src/su.c: (!USE_PAM) Provide visible information indicating that
su was denied.
2008-11-23 12:10:21 +00:00